I have changed my theme to the correct folder but it is still giving an error:
Fatal error: Call to undefined function get_header() in ****/public_html/designreviews.com/wp-content/themes/techwise/index.php on line 1
Sounds like an issue with your WP installation or how you're installing the theme. If you want me to, I can login and try uploading the theme myself. Just give me your admin login info for WP.